PDF static analysis report

Static analysis result for SHA-256 a42e8c3ad2b51660…

SUSPICIOUS

PDF

48.2 KB Created: 2021-05-19 01:12:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: cd6f8af17ad9a2e5e54be160b7ded25a SHA-1: 227a4f9ecfd4f4e0e0fe3dcb74c73c3ca4151f10 SHA-256: a42e8c3ad2b51660db7f5ee21ad18cd31c33121bb3b53b10bc194b937c8d8026
42 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains embedded URLs and a call-to-action phrase, strongly suggesting a lure to download a malicious application. The primary URL points to a 'robux generator', a common theme in scams. The ML classifier also flagged this PDF as malicious, increasing confidence in its suspicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

Heuristics 3

  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://netcdn.xyz/app/431946152/real-robux-generator-2021-game-hack PDF link annotation
    • https://xiangquan.com.tw/image/data/files/earn-free-robux_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/minecraft-dungeons-free-download-pc_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-apk-free-download_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/how-to-get-free-robux-games_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-coin-spin-daily-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/real-roblox_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/minecraft-java-free-account_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-mod-apk-latest-hack-with-unlimited-free-spins_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/robux-free-online_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/wurst_GM479516143.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/roblox-piano-hack_GM431946152.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/reddit-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://xiangquan.com.tw/image/data/files/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b17.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B17 26464 bytes
SHA-256: 8ff7a610aa5adf7d1b047e2dff2f6a57f7fa5a3a76cd1c2db7b2962c30105f02
font_01_sfnt_off000087ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87AC 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off000094bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94BD 20032 bytes
SHA-256: afefc367fe02705dd32fb57ffdfb051f47e21dfa1172509b32c4b30ccb6a0e8f